The phrase "money talks" resonates because…

The phrase "money talks" resonates because money is a communications medium. We have seen already that money is a storehouse of communally achieved work, skill, and experience. But just as the clock separates time and space, money separates work from other aspects of human experience. "Time is money," it is said, and money is the storehouse of time spent at work.

-- Marshall McLuhan, 1964